The density of white matter in the brain __________.
A. increases throughout childhood
B. thickens when the gray matter does, and thins when the gray matter does
C. decreases throughout childhood and adolescence
D. increases until middle childhood
Answer: A
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Suppose old people on average get a lower score on some test than other people do. What can we conclude about test bias, or what additional information would we need?
a. We can conclude that the test is biased against old people. b. We can conclude that the test is not biased against old people. c. Before drawing a conclusion, we need to know how many old people answered more than half the questions correctly. d. Before drawing a conclusion, we need to know whether the test scores accurately predict the performance of old people.
Over-the-counter medications of the late nineteenth century frequently contained opiates such as heroin
a. True b. False Indicate whether the statement is true or false
Graphology has been shown to be valuable for
a. assessing personality traits. b. selecting people for jobs. c. detecting forgeries. d. all of these.
Rats that traversed a maze for 10 consecutive days with no reward showed no evidence of learning the maze. When reinforcement was provided beginning on the 11th day, Tolman reported that these rats:
A) were unable to effectively master the maze over the next week due to learned helplessness. B) slowly started to learn the maze over the next week, as long as reinforcement was provided each day. C) immediately demonstrated mastery of the maze. D) slowly started to learn the maze over the next week, even if reinforcement was discontinued.